[0,1,1,2,2,3,2,3,3,5,5,6,6,7,5,6,7,7,6,10,10,11,
10,11,11,13,13,14,14,15,14,15,14,17,14,17,15,19,
17,19,19,21,21,22,22,23,21,22,23,21,22,26,23,23,
26,26,26,29,29,30,30,31,30,31,31,33,33,34,34,35,
34,35,35,37,37,38,38,39,38,39,39,41,41,42,42,43,
41,42,43,43,38,46,46,47,42]
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